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14. Pathophysiology of Contrast-Induced Neurotoxicity: A Narrative Review of Possible Mechanisms.

Author

Mariajoseph, Frederick P., Lai, Leon, Moore, Justin, Chandra, Ronil, Goldschlager, Tony, Praeger, Adrian J., and Slater, Lee-Anne

Subjects
*NEUROTOXICOLOGY, *PATHOLOGICAL physiology, *ISCHEMIC stroke, *CONTRAST media, *NERVE tissue
Abstract

Background: Contrast-induced neurotoxicity (CIN) is an increasingly observed event following the administration of iodinated contrast. It presents as a spectrum of neurological symptoms that closely mimic ischaemic stroke, however, CIN remains a poorly understood clinical phenomenon. An appreciation of the underlying pathophysiological mechanisms is essential to improve clinical understanding and enhance decision-making. Methods: A broad literature search of Medline (1946 to December 2022) and Embase (1947 to December 2022) was conducted. Articles discussing the pathophysiology of CIN were reviewed. Summary: The pathogenesis of CIN appears to be multifactorial. A key step is likely blood-brain barrier (BBB) breakdown due to factors including ischaemic stroke, uncontrolled hypertension, and possibly contrast agents themselves, among others. This is followed by passage of contrast agents across the BBB, leading to chemotoxic sequelae on neural tissue. Key Messages: This review provides a clinically oriented review on the pathophysiology of CIN to enhance knowledge and improve decision-making among clinicians. [ABSTRACT FROM AUTHOR]

Published
2024
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